Following last week's indications that Rainbow Six : Athena Sword was delayed
that inspired a near-instantaneous denial (story)
comes a note from Ubisoft admitting that the RS3 expansion has indeed been
delayed. Here's word:

Ubisoft is committed to producing quality
games for its customers and fans. We have listened to our community and
the concerns they have voiced about the Tom Clancy's Rainbow Six 3 franchise on
the PC. In keeping with our dedication to create excellent products, the
mission pack for Tom Clancy's Rainbow Six 3: Raven Shield, Tom Clancy's Rainbow
Six 3: Athena Sword, will now be releasing in early 2004. This later release
date will allow for us to develop the top quality game we know our fans have
come to expect from Ubisoft.